RT Journal Article SR Electronic T1 Gossypol induces DNA strand breaks in human fibroblasts and sister chromatid exchanges in human lymphocytes in vitro. JF Journal of Medical Genetics JO J Med Genet FD BMJ Publishing Group Ltd SP 129 OP 132 DO 10.1136/jmg.21.2.129 VO 21 IS 2 A1 M Nordenskjöld A1 B Lambert YR 1984 UL http://jmg.bmj.com/content/21/2/129.abstract AB The male contraceptive agent gossypol was found to induce a dose related increase of DNA strand breaks in human fibroblasts in vitro at concentrations of 5 to 40 micrograms/ml. The effect was reduced in the presence of 2% fetal calf serum. A weak but reproducible increase in the SCE frequency was found in human lymphocytes treated for 1 hour in serum-free medium with 0.04 to 4 micrograms/ml of gossypol.